Combination of deep black and gold in this look with Ascension backpack and Eternity greatsword suits perfectly the Commander of the Royal Guard.
This character is additionally wearing 1 ghostly infusion and Coalescence trinket which complete the look. I have recently added peerles infusion, but it's not captured on the pictures.
Since I cannot update wardrobe panel due to some technical issues of this website, here is what I am wearing: